T Coronae Borealis (T CrB) June 1st 2024

            T Coronae Borealis (T CrB), nicknamed the Blaze star, is a recurrent nova in the constellation Corona Borealis. It was first discovered in outburst in 1866 by John Birmingham, although it had been observed earlier as a 10th magnitude star. It may have been observed in 1217 and in 1787 as well. It is expected to undergo an outburst again in 2024.

T Coronae Borealis (aussi nommé Blaze Star) est une étoile binaire symbiotique située à environ environ 806 pc (∼2 630 al) de la Terre dans la constellation de la Couronne boréale. T Coronae Borealis a en temps normal une magnitude d'environ 10 mais elle s'éclaira deux fois, en 1866 et en 1946, atteignant une magnitude de 2,0. Par recoupement avec de supposées observations plus anciennes de la nova, on estime que ce phénomène se reproduit suivant une période d'environ 80 ans. En mars 2023, on constate un changement significatif de la magnitude de T Coronae Borealis, descendue à 12,3. Une telle atténuation s'était produite l'année précédant l'explosion de 1946 ; cela permet de supposer un rebond dans un délai similaire d'un peu plus d'un an. En février 2024, la NASA envisage que le phénomène aurait lieu d'ici à septembre 2024.
(source : Wikipedia)

Observation : 1er juin 2024 : Magnitude 10,2.

= Acquisition info =
William Optics Zenithstar 73ii (FL 430mm)
Risingcam IMX571 color
iOptron CEM26 + iPolar
ZWO ASI224MC + WO Uniguide 32/120
NINA & PHD2

= Séances photos = 
1er juin 2024 -- LPro : 30 x 60s

= Traitement/processing =
Siril & Gimp

@Astrobox 2.0 / St-Jean-sur-Richelieu, Québec

AstroM1 


rs1x.1C
   

Taken on: June 1, 2024

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